OK, let's work through this together. We're starting with 166 and we're going to multiply it by 451, which means we add 166 to itself 451 times.
Step 1: 0 + 166 = 166
Step 2: 166 + 166 = 332
Step 3: 332 + 166 = 498
Step 4: 498 + 166 = 664
Step 5: 664 + 166 = 830
Step 6: 830 + 166 = 996
Step 7: 996 + 166 = 1162
Step 8: 1162 + 166 = 1328
Step 9: 1328 + 166 = 1494
Step 10: 1494 + 166 = 1660
Step 11: 1660 + 166 = 1826
Step 12: 1826 + 166 = 1992
Step 13: 1992 + 166 = 2158
Step 14: 2158 + 166 = 2324
Step 15: 2324 + 166 = 2490
Step 16: 2490 + 166 = 2656
Step 17: 2656 + 166 = 2822
Step 18: 2822 + 166 = 2988
Step 19: 2988 + 166 = 3154
Step 20: 3154 + 166 = 3320
Step 21: 3320 + 166 = 3486
Step 22: 3486 + 166 = 3652
Step 23: 3652 + 166 = 3818
Step 24: 3818 + 166 = 3984
Step 25: 3984 + 166 = 4150
Step 26: 4150 + 166 = 4316
Step 27: 4316 + 166 = 4482
Step 28: 4482 + 166 = 4648
Step 29: 4648 + 166 = 4814
Step 30: 4814 + 166 = 4980
Step 31: 4980 + 166 = 5146
Step 32: 5146 + 166 = 5312
Step 33: 5312 + 166 = 5478
Step 34: 5478 + 166 = 5644
Step 35: 5644 + 166 = 5810
Step 36: 5810 + 166 = 5976
Step 37: 5976 + 166 = 6142
Step 38: 6142 + 166 = 6308
Step 39: 6308 + 166 = 6474
Step 40: 6474 + 166 = 6640
Step 41: 6640 + 166 = 6806
Step 42: 6806 + 166 = 6972
Step 43: 6972 + 166 = 7138
Step 44: 7138 + 166 = 7304
Step 45: 7304 + 166 = 7470
Step 46: 7470 + 166 = 7636
Step 47: 7636 + 166 = 7802
Step 48: 7802 + 166 = 7968
Step 49: 7968 + 166 = 8134
Step 50: 8134 + 166 = 8300
Step 51: 8300 + 166 = 8466
Step 52: 8466 + 166 = 8632
Step 53: 8632 + 166 = 8798
Step 54: 8798 + 166 = 8964
Step 55: 8964 + 166 = 9130
Step 56: 9130 + 166 = 9296
Step 57: 9296 + 166 = 9462
Step 58: 9462 + 166 = 9628
Step 59: 9628 + 166 = 9794
Step 60: 9794 + 166 = 9960
Step 61: 9960 + 166 = 10126
Step 62: 10126 + 166 = 10292
Step 63: 10292 + 166 = 10458
Step 64: 10458 + 166 = 10624
Step 65: 10624 + 166 = 10790
Step 66: 10790 + 166 = 10956
Step 67: 10956 + 166 = 11122
Step 68: 11122 + 166 = 11288
Step 69: 11288 + 166 = 11454
Step 70: 11454 + 166 = 11620
Step 71: 11620 + 166 = 11786
Step 72: 11786 + 166 = 11952
Step 73: 11952 + 166 = 12118
Step 74: 12118 + 166 = 12284
Step 75: 12284 + 166 = 12450
Step 76: 12450 + 166 = 12616
Step 77: 12616 + 166 = 12782
Step 78: 12782 + 166 = 12948
Step 79: 12948 + 166 = 13114
Step 80: 13114 + 166 = 13280
Step 81: 13280 + 166 = 13446
Step 82: 13446 + 166 = 13612
Step 83: 13612 + 166 = 13778
Step 84: 13778 + 166 = 13944
Step 85: 13944 + 166 = 14110
Step 86: 14110 + 166 = 14276
Step 87: 14276 + 166 = 14442
Step 88: 14442 + 166 = 14608
Step 89: 14608 + 166 = 14774
Step 90: 14774 + 166 = 14940
Step 91: 14940 + 166 = 15106
Step 92: 15106 + 166 = 15272
Step 93: 15272 + 166 = 15438
Step 94: 15438 + 166 = 15604
Step 95: 15604 + 166 = 15770
Step 96: 15770 + 166 = 15936
Step 97: 15936 + 166 = 16102
Step 98: 16102 + 166 = 16268
Step 99: 16268 + 166 = 16434
Step 100: 16434 + 166 = 16600
Step 101: 16600 + 166 = 16766
Step 102: 16766 + 166 = 16932
Step 103: 16932 + 166 = 17098
Step 104: 17098 + 166 = 17264
Step 105: 17264 + 166 = 17430
Step 106: 17430 + 166 = 17596
Step 107: 17596 + 166 = 17762
Step 108: 17762 + 166 = 17928
Step 109: 17928 + 166 = 18094
Step 110: 18094 + 166 = 18260
Step 111: 18260 + 166 = 18426
Step 112: 18426 + 166 = 18592
Step 113: 18592 + 166 = 18758
Step 114: 18758 + 166 = 18924
Step 115: 18924 + 166 = 19090
Step 116: 19090 + 166 = 19256
Step 117: 19256 + 166 = 19422
Step 118: 19422 + 166 = 19588
Step 119: 19588 + 166 = 19754
Step 120: 19754 + 166 = 19920
Step 121: 19920 + 166 = 20086
Step 122: 20086 + 166 = 20252
Step 123: 20252 + 166 = 20418
Step 124: 20418 + 166 = 20584
Step 125: 20584 + 166 = 20750
Step 126: 20750 + 166 = 20916
Step 127: 20916 + 166 = 21082
Step 128: 21082 + 166 = 21248
Step 129: 21248 + 166 = 21414
Step 130: 21414 + 166 = 21580
Step 131: 21580 + 166 = 21746
Step 132: 21746 + 166 = 21912
Step 133: 21912 + 166 = 22078
Step 134: 22078 + 166 = 22244
Step 135: 22244 + 166 = 22410
Step 136: 22410 + 166 = 22576
Step 137: 22576 + 166 = 22742
Step 138: 22742 + 166 = 22908
Step 139: 22908 + 166 = 23074
Step 140: 23074 + 166 = 23240
Step 141: 23240 + 166 = 23406
Step 142: 23406 + 166 = 23572
Step 143: 23572 + 166 = 23738
Step 144: 23738 + 166 = 23904
Step 145: 23904 + 166 = 24070
Step 146: 24070 + 166 = 24236
Step 147: 24236 + 166 = 24402
Step 148: 24402 + 166 = 24568
Step 149: 24568 + 166 = 24734
Step 150: 24734 + 166 = 24900
Step 151: 24900 + 166 = 25066
Step 152: 25066 + 166 = 25232
Step 153: 25232 + 166 = 25398
Step 154: 25398 + 166 = 25564
Step 155: 25564 + 166 = 25730
Step 156: 25730 + 166 = 25896
Step 157: 25896 + 166 = 26062
Step 158: 26062 + 166 = 26228
Step 159: 26228 + 166 = 26394
Step 160: 26394 + 166 = 26560
Step 161: 26560 + 166 = 26726
Step 162: 26726 + 166 = 26892
Step 163: 26892 + 166 = 27058
Step 164: 27058 + 166 = 27224
Step 165: 27224 + 166 = 27390
Step 166: 27390 + 166 = 27556
Step 167: 27556 + 166 = 27722
Step 168: 27722 + 166 = 27888
Step 169: 27888 + 166 = 28054
Step 170: 28054 + 166 = 28220
Step 171: 28220 + 166 = 28386
Step 172: 28386 + 166 = 28552
Step 173: 28552 + 166 = 28718
Step 174: 28718 + 166 = 28884
Step 175: 28884 + 166 = 29050
Step 176: 29050 + 166 = 29216
Step 177: 29216 + 166 = 29382
Step 178: 29382 + 166 = 29548
Step 179: 29548 + 166 = 29714
Step 180: 29714 + 166 = 29880
Step 181: 29880 + 166 = 30046
Step 182: 30046 + 166 = 30212
Step 183: 30212 + 166 = 30378
Step 184: 30378 + 166 = 30544
Step 185: 30544 + 166 = 30710
Step 186: 30710 + 166 = 30876
Step 187: 30876 + 166 = 31042
Step 188: 31042 + 166 = 31208
Step 189: 31208 + 166 = 31374
Step 190: 31374 + 166 = 31540
Step 191: 31540 + 166 = 31706
Step 192: 31706 + 166 = 31872
Step 193: 31872 + 166 = 32038
Step 194: 32038 + 166 = 32204
Step 195: 32204 + 166 = 32370
Step 196: 32370 + 166 = 32536
Step 197: 32536 + 166 = 32702
Step 198: 32702 + 166 = 32868
Step 199: 32868 + 166 = 33034
Step 200: 33034 + 166 = 33200
Step 201: 33200 + 166 = 33366
Step 202: 33366 + 166 = 33532
Step 203: 33532 + 166 = 33698
Step 204: 33698 + 166 = 33864
Step 205: 33864 + 166 = 34030
Step 206: 34030 + 166 = 34196
Step 207: 34196 + 166 = 34362
Step 208: 34362 + 166 = 34528
Step 209: 34528 + 166 = 34694
Step 210: 34694 + 166 = 34860
Step 211: 34860 + 166 = 35026
Step 212: 35026 + 166 = 35192
Step 213: 35192 + 166 = 35358
Step 214: 35358 + 166 = 35524
Step 215: 35524 + 166 = 35690
Step 216: 35690 + 166 = 35856
Step 217: 35856 + 166 = 36022
Step 218: 36022 + 166 = 36188
Step 219: 36188 + 166 = 36354
Step 220: 36354 + 166 = 36520
Step 221: 36520 + 166 = 36686
Step 222: 36686 + 166 = 36852
Step 223: 36852 + 166 = 37018
Step 224: 37018 + 166 = 37184
Step 225: 37184 + 166 = 37350
Step 226: 37350 + 166 = 37516
Step 227: 37516 + 166 = 37682
Step 228: 37682 + 166 = 37848
Step 229: 37848 + 166 = 38014
Step 230: 38014 + 166 = 38180
Step 231: 38180 + 166 = 38346
Step 232: 38346 + 166 = 38512
Step 233: 38512 + 166 = 38678
Step 234: 38678 + 166 = 38844
Step 235: 38844 + 166 = 39010
Step 236: 39010 + 166 = 39176
Step 237: 39176 + 166 = 39342
Step 238: 39342 + 166 = 39508
Step 239: 39508 + 166 = 39674
Step 240: 39674 + 166 = 39840
Step 241: 39840 + 166 = 40006
Step 242: 40006 + 166 = 40172
Step 243: 40172 + 166 = 40338
Step 244: 40338 + 166 = 40504
Step 245: 40504 + 166 = 40670
Step 246: 40670 + 166 = 40836
Step 247: 40836 + 166 = 41002
Step 248: 41002 + 166 = 41168
Step 249: 41168 + 166 = 41334
Step 250: 41334 + 166 = 41500
Step 251: 41500 + 166 = 41666
Step 252: 41666 + 166 = 41832
Step 253: 41832 + 166 = 41998
Step 254: 41998 + 166 = 42164
Step 255: 42164 + 166 = 42330
Step 256: 42330 + 166 = 42496
Step 257: 42496 + 166 = 42662
Step 258: 42662 + 166 = 42828
Step 259: 42828 + 166 = 42994
Step 260: 42994 + 166 = 43160
Step 261: 43160 + 166 = 43326
Step 262: 43326 + 166 = 43492
Step 263: 43492 + 166 = 43658
Step 264: 43658 + 166 = 43824
Step 265: 43824 + 166 = 43990
Step 266: 43990 + 166 = 44156
Step 267: 44156 + 166 = 44322
Step 268: 44322 + 166 = 44488
Step 269: 44488 + 166 = 44654
Step 270: 44654 + 166 = 44820
Step 271: 44820 + 166 = 44986
Step 272: 44986 + 166 = 45152
Step 273: 45152 + 166 = 45318
Step 274: 45318 + 166 = 45484
Step 275: 45484 + 166 = 45650
Step 276: 45650 + 166 = 45816
Step 277: 45816 + 166 = 45982
Step 278: 45982 + 166 = 46148
Step 279: 46148 + 166 = 46314
Step 280: 46314 + 166 = 46480
Step 281: 46480 + 166 = 46646
Step 282: 46646 + 166 = 46812
Step 283: 46812 + 166 = 46978
Step 284: 46978 + 166 = 47144
Step 285: 47144 + 166 = 47310
Step 286: 47310 + 166 = 47476
Step 287: 47476 + 166 = 47642
Step 288: 47642 + 166 = 47808
Step 289: 47808 + 166 = 47974
Step 290: 47974 + 166 = 48140
Step 291: 48140 + 166 = 48306
Step 292: 48306 + 166 = 48472
Step 293: 48472 + 166 = 48638
Step 294: 48638 + 166 = 48804
Step 295: 48804 + 166 = 48970
Step 296: 48970 + 166 = 49136
Step 297: 49136 + 166 = 49302
Step 298: 49302 + 166 = 49468
Step 299: 49468 + 166 = 49634
Step 300: 49634 + 166 = 49800
Step 301: 49800 + 166 = 49966
Step 302: 49966 + 166 = 50132
Step 303: 50132 + 166 = 50298
Step 304: 50298 + 166 = 50464
Step 305: 50464 + 166 = 50630
Step 306: 50630 + 166 = 50796
Step 307: 50796 + 166 = 50962
Step 308: 50962 + 166 = 51128
Step 309: 51128 + 166 = 51294
Step 310: 51294 + 166 = 51460
Step 311: 51460 + 166 = 51626
Step 312: 51626 + 166 = 51792
Step 313: 51792 + 166 = 51958
Step 314: 51958 + 166 = 52124
Step 315: 52124 + 166 = 52290
Step 316: 52290 + 166 = 52456
Step 317: 52456 + 166 = 52622
Step 318: 52622 + 166 = 52788
Step 319: 52788 + 166 = 52954
Step 320: 52954 + 166 = 53120
Step 321: 53120 + 166 = 53286
Step 322: 53286 + 166 = 53452
Step 323: 53452 + 166 = 53618
Step 324: 53618 + 166 = 53784
Step 325: 53784 + 166 = 53950
Step 326: 53950 + 166 = 54116
Step 327: 54116 + 166 = 54282
Step 328: 54282 + 166 = 54448
Step 329: 54448 + 166 = 54614
Step 330: 54614 + 166 = 54780
Step 331: 54780 + 166 = 54946
Step 332: 54946 + 166 = 55112
Step 333: 55112 + 166 = 55278
Step 334: 55278 + 166 = 55444
Step 335: 55444 + 166 = 55610
Step 336: 55610 + 166 = 55776
Step 337: 55776 + 166 = 55942
Step 338: 55942 + 166 = 56108
Step 339: 56108 + 166 = 56274
Step 340: 56274 + 166 = 56440
Step 341: 56440 + 166 = 56606
Step 342: 56606 + 166 = 56772
Step 343: 56772 + 166 = 56938
Step 344: 56938 + 166 = 57104
Step 345: 57104 + 166 = 57270
Step 346: 57270 + 166 = 57436
Step 347: 57436 + 166 = 57602
Step 348: 57602 + 166 = 57768
Step 349: 57768 + 166 = 57934
Step 350: 57934 + 166 = 58100
Step 351: 58100 + 166 = 58266
Step 352: 58266 + 166 = 58432
Step 353: 58432 + 166 = 58598
Step 354: 58598 + 166 = 58764
Step 355: 58764 + 166 = 58930
Step 356: 58930 + 166 = 59096
Step 357: 59096 + 166 = 59262
Step 358: 59262 + 166 = 59428
Step 359: 59428 + 166 = 59594
Step 360: 59594 + 166 = 59760
Step 361: 59760 + 166 = 59926
Step 362: 59926 + 166 = 60092
Step 363: 60092 + 166 = 60258
Step 364: 60258 + 166 = 60424
Step 365: 60424 + 166 = 60590
Step 366: 60590 + 166 = 60756
Step 367: 60756 + 166 = 60922
Step 368: 60922 + 166 = 61088
Step 369: 61088 + 166 = 61254
Step 370: 61254 + 166 = 61420
Step 371: 61420 + 166 = 61586
Step 372: 61586 + 166 = 61752
Step 373: 61752 + 166 = 61918
Step 374: 61918 + 166 = 62084
Step 375: 62084 + 166 = 62250
Step 376: 62250 + 166 = 62416
Step 377: 62416 + 166 = 62582
Step 378: 62582 + 166 = 62748
Step 379: 62748 + 166 = 62914
Step 380: 62914 + 166 = 63080
Step 381: 63080 + 166 = 63246
Step 382: 63246 + 166 = 63412
Step 383: 63412 + 166 = 63578
Step 384: 63578 + 166 = 63744
Step 385: 63744 + 166 = 63910
Step 386: 63910 + 166 = 64076
Step 387: 64076 + 166 = 64242
Step 388: 64242 + 166 = 64408
Step 389: 64408 + 166 = 64574
Step 390: 64574 + 166 = 64740
Step 391: 64740 + 166 = 64906
Step 392: 64906 + 166 = 65072
Step 393: 65072 + 166 = 65238
Step 394: 65238 + 166 = 65404
Step 395: 65404 + 166 = 65570
Step 396: 65570 + 166 = 65736
Step 397: 65736 + 166 = 65902
Step 398: 65902 + 166 = 66068
Step 399: 66068 + 166 = 66234
Step 400: 66234 + 166 = 66400
Step 401: 66400 + 166 = 66566
Step 402: 66566 + 166 = 66732
Step 403: 66732 + 166 = 66898
Step 404: 66898 + 166 = 67064
Step 405: 67064 + 166 = 67230
Step 406: 67230 + 166 = 67396
Step 407: 67396 + 166 = 67562
Step 408: 67562 + 166 = 67728
Step 409: 67728 + 166 = 67894
Step 410: 67894 + 166 = 68060
Step 411: 68060 + 166 = 68226
Step 412: 68226 + 166 = 68392
Step 413: 68392 + 166 = 68558
Step 414: 68558 + 166 = 68724
Step 415: 68724 + 166 = 68890
Step 416: 68890 + 166 = 69056
Step 417: 69056 + 166 = 69222
Step 418: 69222 + 166 = 69388
Step 419: 69388 + 166 = 69554
Step 420: 69554 + 166 = 69720
Step 421: 69720 + 166 = 69886
Step 422: 69886 + 166 = 70052
Step 423: 70052 + 166 = 70218
Step 424: 70218 + 166 = 70384
Step 425: 70384 + 166 = 70550
Step 426: 70550 + 166 = 70716
Step 427: 70716 + 166 = 70882
Step 428: 70882 + 166 = 71048
Step 429: 71048 + 166 = 71214
Step 430: 71214 + 166 = 71380
Step 431: 71380 + 166 = 71546
Step 432: 71546 + 166 = 71712
Step 433: 71712 + 166 = 71878
Step 434: 71878 + 166 = 72044
Step 435: 72044 + 166 = 72210
Step 436: 72210 + 166 = 72376
Step 437: 72376 + 166 = 72542
Step 438: 72542 + 166 = 72708
Step 439: 72708 + 166 = 72874
Step 440: 72874 + 166 = 73040
Step 441: 73040 + 166 = 73206
Step 442: 73206 + 166 = 73372
Step 443: 73372 + 166 = 73538
Step 444: 73538 + 166 = 73704
Step 445: 73704 + 166 = 73870
Step 446: 73870 + 166 = 74036
Step 447: 74036 + 166 = 74202
Step 448: 74202 + 166 = 74368
Step 449: 74368 + 166 = 74534
Step 450: 74534 + 166 = 74700
Step 451: 74700 + 166 = 74866

So, 166*451 = 74866